MENIFEE, Calif. (AP) — Authorities in Southern California are searching for possible human remains at the home of an 11-year-old autistic boy who vanished over the weekend.

Menifee Mayor Scott Mann says investigators are treating the home of Terry Dewayne Smith Jr. as a crime scene.

Riverside County sheriff's Deputy Albert Martinez tells the Riverside Press-Enterprise (http://bit.ly/1ab9yw7 ) that detectives were led to the home shortly after 1 a.m. Wednesday based on evidence indicating there might be a body there.

However, authorities aren't releasing any details.

Volunteers, meanwhile, are continuing to search the surrounding semirural area for the boy, who was last seen on Saturday. About 1,000 people hunted for him on Tuesday.